Mindy Kaling recently tweeted: "I'm feeling so much Girl Power these days the FBI's gonna start tapping my phone." I just about fell out of my seat laughing, but I could not agree more!

Before Gaga and Beyoncé made a case for girls everywhere, these all-girl groups weren't afraid to stand out and live loud. As opposed to their contemporaries, these girl bands broke the mold and changed preconceived notions about what it meant to be taken seriously as an all-girl musical group. Did your favorite make the list? Add your picks to the comment section!